Paint brush



FIG. 1 is a perspective view of a paint brush showing my new design.

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is an opposite side elevation view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a rear elevation view thereof.

CLAIM The ornamental design for a paint brush, as shown and described.